Generic Instance Method

shuffled(using:)

Returns the elements of the sequence, shuffled using the given generator as a source for randomness.

Declaration

func shuffled<T>(using generator: inout T) -> [MLDataTable.Row] where T : RandomNumberGenerator

Parameters

generator

The random number generator to use when shuffling the sequence.

Return Value

An array of this sequence’s elements in a shuffled order.

Discussion

You use this method to randomize the elements of a sequence when you are using a custom random number generator. For example, you can shuffle the numbers between 0 and 9 by calling the shuffled(using:) method on that range:

let numbers = 0...9
let shuffledNumbers = numbers.shuffled(using: &myGenerator)
// shuffledNumbers == [8, 9, 4, 3, 2, 6, 7, 0, 5, 1]

Complexity: O(n), where n is the length of the sequence.

See Also

Reordering a Row Collection's Rows

func sorted(by: (MLDataTable.Row, MLDataTable.Row) -> Bool) -> [MLDataTable.Row]

Returns the elements of the sequence, sorted using the given predicate as the comparison between elements.

func reversed() -> ReversedCollection<MLDataTable.Rows>

Returns a view presenting the elements of the collection in reverse order.

func shuffled() -> [MLDataTable.Row]

Returns the elements of the sequence, shuffled.